Revert "[C++] Refactor uint128 (#8416)"
This reverts commit b604419d26.
This commit is contained in:
Adam Cozzette
parent
97cb3a862f
commit
600799912a
@ -33,7 +33,6 @@
|
||||
#include <iomanip>
|
||||
#include <ostream> // NOLINT(readability/streams)
|
||||
#include <sstream>
|
||||
#include <string>
|
||||
|
||||
#include <google/protobuf/stubs/logging.h>
|
||||
|
||||
@ -41,7 +40,11 @@
|
||||
|
||||
namespace google {
|
||||
namespace protobuf {
|
||||
namespace int128_internal {
|
||||
|
||||
const uint128_pod kuint128max = {
|
||||
static_cast<uint64>(PROTOBUF_LONGLONG(0xFFFFFFFFFFFFFFFF)),
|
||||
static_cast<uint64>(PROTOBUF_LONGLONG(0xFFFFFFFFFFFFFFFF))
|
||||
};
|
||||
|
||||
// Returns the 0-based position of the last set bit (i.e., most significant bit)
|
||||
// in the given uint64. The argument may not be 0.
|
||||
@ -185,14 +188,6 @@ std::ostream& operator<<(std::ostream& o, const uint128& b) {
|
||||
return o << rep;
|
||||
}
|
||||
|
||||
void VerifyValidShift(std::string op, int amount) {
|
||||
// Shifting more than 127 is UB in Abseil, just crash for now to verify
|
||||
// callers don't depend on it returning 0.
|
||||
GOOGLE_CHECK_LT(amount, 128) << "Error executing operator " << op
|
||||
<< ": shifts of more than 127 are undefined";
|
||||
}
|
||||
|
||||
} // namespace int128_internal
|
||||
} // namespace protobuf
|
||||
} // namespace google
|
||||
|
||||
|
||||
@ -33,33 +33,38 @@
|
||||
#include <google/protobuf/stubs/common.h>
|
||||
|
||||
#include <iosfwd>
|
||||
#include <limits>
|
||||
#include <string>
|
||||
|
||||
#include <google/protobuf/port_def.inc>
|
||||
|
||||
namespace google {
|
||||
namespace protobuf {
|
||||
namespace int128_internal {
|
||||
|
||||
struct uint128_pod;
|
||||
|
||||
// TODO(xiaofeng): Define GOOGLE_PROTOBUF_HAS_CONSTEXPR when constexpr is
|
||||
// available.
|
||||
#ifdef GOOGLE_PROTOBUF_HAS_CONSTEXPR
|
||||
# define UINT128_CONSTEXPR constexpr
|
||||
#else
|
||||
# define UINT128_CONSTEXPR
|
||||
#endif
|
||||
|
||||
// An unsigned 128-bit integer type. Thread-compatible.
|
||||
class PROTOBUF_EXPORT uint128 {
|
||||
public:
|
||||
uint128() = default;
|
||||
|
||||
private:
|
||||
// Use `MakeUint128` instead.
|
||||
constexpr uint128(uint64 top, uint64 bottom);
|
||||
|
||||
public:
|
||||
UINT128_CONSTEXPR uint128(); // Sets to 0, but don't trust on this behavior.
|
||||
UINT128_CONSTEXPR uint128(uint64 top, uint64 bottom);
|
||||
#ifndef SWIG
|
||||
constexpr uint128(int bottom);
|
||||
constexpr uint128(uint32 bottom); // Top 96 bits = 0
|
||||
UINT128_CONSTEXPR uint128(int bottom);
|
||||
UINT128_CONSTEXPR uint128(uint32 bottom); // Top 96 bits = 0
|
||||
#endif
|
||||
constexpr uint128(uint64 bottom); // hi_ = 0
|
||||
UINT128_CONSTEXPR uint128(uint64 bottom); // hi_ = 0
|
||||
UINT128_CONSTEXPR uint128(const uint128_pod &val);
|
||||
|
||||
// Trivial copy constructor, assignment operator and destructor.
|
||||
|
||||
void Initialize(uint64 top, uint64 bottom);
|
||||
|
||||
// Arithmetic operators.
|
||||
uint128& operator+=(const uint128& b);
|
||||
uint128& operator-=(const uint128& b);
|
||||
@ -77,10 +82,8 @@ class PROTOBUF_EXPORT uint128 {
|
||||
uint128& operator++();
|
||||
uint128& operator--();
|
||||
|
||||
friend constexpr uint64 Uint128Low64(const uint128& v);
|
||||
friend constexpr uint64 Uint128High64(const uint128& v);
|
||||
|
||||
friend constexpr uint128 MakeUint128(uint64_t high, uint64_t low);
|
||||
friend uint64 Uint128Low64(const uint128& v);
|
||||
friend uint64 Uint128High64(const uint128& v);
|
||||
|
||||
// We add "std::" to avoid including all of port.h.
|
||||
PROTOBUF_EXPORT friend std::ostream& operator<<(std::ostream& o,
|
||||
@ -97,12 +100,26 @@ class PROTOBUF_EXPORT uint128 {
|
||||
uint64 hi_;
|
||||
|
||||
// Not implemented, just declared for catching automatic type conversions.
|
||||
uint128(uint8) = delete;
|
||||
uint128(uint16) = delete;
|
||||
uint128(float v) = delete;
|
||||
uint128(double v) = delete;
|
||||
uint128(uint8);
|
||||
uint128(uint16);
|
||||
uint128(float v);
|
||||
uint128(double v);
|
||||
};
|
||||
|
||||
// This is a POD form of uint128 which can be used for static variables which
|
||||
// need to be operated on as uint128.
|
||||
struct uint128_pod {
|
||||
// Note: The ordering of fields is different than 'class uint128' but the
|
||||
// same as its 2-arg constructor. This enables more obvious initialization
|
||||
// of static instances, which is the primary reason for this struct in the
|
||||
// first place. This does not seem to defeat any optimizations wrt
|
||||
// operations involving this struct.
|
||||
uint64 hi;
|
||||
uint64 lo;
|
||||
};
|
||||
|
||||
PROTOBUF_EXPORT extern const uint128_pod kuint128max;
|
||||
|
||||
// allow uint128 to be logged
|
||||
PROTOBUF_EXPORT extern std::ostream& operator<<(std::ostream& o,
|
||||
const uint128& b);
|
||||
@ -110,12 +127,8 @@ PROTOBUF_EXPORT extern std::ostream& operator<<(std::ostream& o,
|
||||
// Methods to access low and high pieces of 128-bit value.
|
||||
// Defined externally from uint128 to facilitate conversion
|
||||
// to native 128-bit types when compilers support them.
|
||||
inline constexpr uint64 Uint128Low64(const uint128& v) { return v.lo_; }
|
||||
inline constexpr uint64 Uint128High64(const uint128& v) { return v.hi_; }
|
||||
|
||||
constexpr uint128 MakeUint128(uint64_t high, uint64_t low) {
|
||||
return uint128(high, low);
|
||||
}
|
||||
inline uint64 Uint128Low64(const uint128& v) { return v.lo_; }
|
||||
inline uint64 Uint128High64(const uint128& v) { return v.hi_; }
|
||||
|
||||
// TODO: perhaps it would be nice to have int128, a signed 128-bit type?
|
||||
|
||||
@ -130,17 +143,27 @@ inline bool operator!=(const uint128& lhs, const uint128& rhs) {
|
||||
return !(lhs == rhs);
|
||||
}
|
||||
|
||||
inline constexpr uint128::uint128(uint64 top, uint64 bottom)
|
||||
inline UINT128_CONSTEXPR uint128::uint128() : lo_(0), hi_(0) {}
|
||||
inline UINT128_CONSTEXPR uint128::uint128(uint64 top, uint64 bottom)
|
||||
: lo_(bottom), hi_(top) {}
|
||||
inline constexpr uint128::uint128(uint64 bottom)
|
||||
inline UINT128_CONSTEXPR uint128::uint128(const uint128_pod& v)
|
||||
: lo_(v.lo), hi_(v.hi) {}
|
||||
inline UINT128_CONSTEXPR uint128::uint128(uint64 bottom)
|
||||
: lo_(bottom), hi_(0) {}
|
||||
#ifndef SWIG
|
||||
inline constexpr uint128::uint128(uint32 bottom)
|
||||
inline UINT128_CONSTEXPR uint128::uint128(uint32 bottom)
|
||||
: lo_(bottom), hi_(0) {}
|
||||
inline constexpr uint128::uint128(int bottom)
|
||||
inline UINT128_CONSTEXPR uint128::uint128(int bottom)
|
||||
: lo_(bottom), hi_(static_cast<int64>((bottom < 0) ? -1 : 0)) {}
|
||||
#endif
|
||||
|
||||
#undef UINT128_CONSTEXPR
|
||||
|
||||
inline void uint128::Initialize(uint64 top, uint64 bottom) {
|
||||
hi_ = top;
|
||||
lo_ = bottom;
|
||||
}
|
||||
|
||||
// Comparison operators.
|
||||
|
||||
#define CMP128(op) \
|
||||
@ -164,9 +187,9 @@ inline uint128 operator-(const uint128& val) {
|
||||
const uint64 lo_flip = ~Uint128Low64(val);
|
||||
const uint64 lo_add = lo_flip + 1;
|
||||
if (lo_add < lo_flip) {
|
||||
return MakeUint128(hi_flip + 1, lo_add);
|
||||
return uint128(hi_flip + 1, lo_add);
|
||||
}
|
||||
return MakeUint128(hi_flip, lo_add);
|
||||
return uint128(hi_flip, lo_add);
|
||||
}
|
||||
|
||||
inline bool operator!(const uint128& val) {
|
||||
@ -176,12 +199,12 @@ inline bool operator!(const uint128& val) {
|
||||
// Logical operators.
|
||||
|
||||
inline uint128 operator~(const uint128& val) {
|
||||
return MakeUint128(~Uint128High64(val), ~Uint128Low64(val));
|
||||
return uint128(~Uint128High64(val), ~Uint128Low64(val));
|
||||
}
|
||||
|
||||
#define LOGIC128(op) \
|
||||
inline uint128 operator op(const uint128& lhs, const uint128& rhs) { \
|
||||
return MakeUint128(Uint128High64(lhs) op Uint128High64(rhs), \
|
||||
return uint128(Uint128High64(lhs) op Uint128High64(rhs), \
|
||||
Uint128Low64(lhs) op Uint128Low64(rhs)); \
|
||||
}
|
||||
|
||||
@ -206,11 +229,7 @@ LOGICASSIGN128(^=)
|
||||
|
||||
// Shift operators.
|
||||
|
||||
void VerifyValidShift(std::string op, int amount);
|
||||
|
||||
inline uint128 operator<<(const uint128& val, int amount) {
|
||||
VerifyValidShift("<<", amount);
|
||||
|
||||
// uint64 shifts of >= 64 are undefined, so we will need some special-casing.
|
||||
if (amount < 64) {
|
||||
if (amount == 0) {
|
||||
@ -219,14 +238,15 @@ inline uint128 operator<<(const uint128& val, int amount) {
|
||||
uint64 new_hi = (Uint128High64(val) << amount) |
|
||||
(Uint128Low64(val) >> (64 - amount));
|
||||
uint64 new_lo = Uint128Low64(val) << amount;
|
||||
return MakeUint128(new_hi, new_lo);
|
||||
return uint128(new_hi, new_lo);
|
||||
} else if (amount < 128) {
|
||||
return uint128(Uint128Low64(val) << (amount - 64), 0);
|
||||
} else {
|
||||
return uint128(0, 0);
|
||||
}
|
||||
return MakeUint128(Uint128Low64(val) << (amount - 64), 0);
|
||||
}
|
||||
|
||||
inline uint128 operator>>(const uint128& val, int amount) {
|
||||
VerifyValidShift(">>", amount);
|
||||
|
||||
// uint64 shifts of >= 64 are undefined, so we will need some special-casing.
|
||||
if (amount < 64) {
|
||||
if (amount == 0) {
|
||||
@ -235,10 +255,12 @@ inline uint128 operator>>(const uint128& val, int amount) {
|
||||
uint64 new_hi = Uint128High64(val) >> amount;
|
||||
uint64 new_lo = (Uint128Low64(val) >> amount) |
|
||||
(Uint128High64(val) << (64 - amount));
|
||||
return MakeUint128(new_hi, new_lo);
|
||||
return uint128(new_hi, new_lo);
|
||||
} else if (amount < 128) {
|
||||
return uint128(0, Uint128High64(val) >> (amount - 64));
|
||||
} else {
|
||||
return uint128(0, 0);
|
||||
}
|
||||
|
||||
return MakeUint128(0, Uint128High64(val) >> (amount - 64));
|
||||
}
|
||||
|
||||
inline uint128& uint128::operator<<=(int amount) {
|
||||
@ -357,17 +379,6 @@ inline uint128& uint128::operator--() {
|
||||
return *this;
|
||||
}
|
||||
|
||||
constexpr uint128 Uint128Max() {
|
||||
return MakeUint128((std::numeric_limits<uint64>::max)(),
|
||||
(std::numeric_limits<uint64>::max)());
|
||||
}
|
||||
|
||||
} // namespace int128_internal
|
||||
|
||||
using google::protobuf::int128_internal::uint128;
|
||||
using google::protobuf::int128_internal::Uint128Max;
|
||||
using google::protobuf::int128_internal::MakeUint128;
|
||||
|
||||
} // namespace protobuf
|
||||
} // namespace google
|
||||
|
||||
|
||||
@ -33,7 +33,6 @@
|
||||
#include <algorithm>
|
||||
#include <sstream>
|
||||
#include <utility>
|
||||
#include <type_traits>
|
||||
|
||||
#include <google/protobuf/testing/googletest.h>
|
||||
#include <gtest/gtest.h>
|
||||
@ -45,18 +44,16 @@ namespace protobuf {
|
||||
|
||||
TEST(Int128, AllTests) {
|
||||
uint128 zero(0);
|
||||
EXPECT_EQ(zero, uint128());
|
||||
|
||||
uint128 one(1);
|
||||
uint128 one_2arg = MakeUint128(0, 1);
|
||||
uint128 two = MakeUint128(0, 2);
|
||||
uint128 three = MakeUint128(0, 3);
|
||||
uint128 big = MakeUint128(2000, 2);
|
||||
uint128 big_minus_one = MakeUint128(2000, 1);
|
||||
uint128 bigger = MakeUint128(2001, 1);
|
||||
uint128 biggest(Uint128Max());
|
||||
uint128 high_low = MakeUint128(1, 0);
|
||||
uint128 low_high = MakeUint128(0, kuint64max);
|
||||
uint128 one_2arg(0, 1);
|
||||
uint128 two(0, 2);
|
||||
uint128 three(0, 3);
|
||||
uint128 big(2000, 2);
|
||||
uint128 big_minus_one(2000, 1);
|
||||
uint128 bigger(2001, 1);
|
||||
uint128 biggest(kuint128max);
|
||||
uint128 high_low(1, 0);
|
||||
uint128 low_high(0, kuint64max);
|
||||
EXPECT_LT(one, two);
|
||||
EXPECT_GT(two, one);
|
||||
EXPECT_LT(one, big);
|
||||
@ -95,6 +92,8 @@ TEST(Int128, AllTests) {
|
||||
EXPECT_EQ(big, (big >> 1) << 1);
|
||||
EXPECT_EQ(one, (one << 80) >> 80);
|
||||
EXPECT_EQ(zero, (one >> 80) << 80);
|
||||
EXPECT_EQ(zero, big >> 128);
|
||||
EXPECT_EQ(zero, big << 128);
|
||||
|
||||
// Shift assignments.
|
||||
uint128 big_copy = big;
|
||||
@ -118,9 +117,9 @@ TEST(Int128, AllTests) {
|
||||
big_copy = big;
|
||||
EXPECT_EQ(big >> 73, big_copy >>= 73);
|
||||
big_copy = big;
|
||||
EXPECT_EQ(big << 127, big_copy <<= 127);
|
||||
EXPECT_EQ(big << 128, big_copy <<= 128);
|
||||
big_copy = big;
|
||||
EXPECT_EQ(big >> 127, big_copy >>= 127);
|
||||
EXPECT_EQ(big >> 128, big_copy >>= 128);
|
||||
|
||||
EXPECT_EQ(Uint128High64(biggest), kuint64max);
|
||||
EXPECT_EQ(Uint128Low64(biggest), kuint64max);
|
||||
@ -171,13 +170,92 @@ TEST(Int128, AllTests) {
|
||||
|
||||
EXPECT_EQ(big, -(-big));
|
||||
EXPECT_EQ(two, -((-one) - 1));
|
||||
EXPECT_EQ(Uint128Max(), -one);
|
||||
EXPECT_EQ(kuint128max, -one);
|
||||
EXPECT_EQ(zero, -zero);
|
||||
|
||||
GOOGLE_LOG(INFO) << one;
|
||||
GOOGLE_LOG(INFO) << big_minus_one;
|
||||
}
|
||||
|
||||
TEST(Int128, PodTests) {
|
||||
uint128_pod pod = { 12345, 67890 };
|
||||
uint128 from_pod(pod);
|
||||
EXPECT_EQ(12345, Uint128High64(from_pod));
|
||||
EXPECT_EQ(67890, Uint128Low64(from_pod));
|
||||
|
||||
uint128 zero(0);
|
||||
uint128_pod zero_pod = {0, 0};
|
||||
uint128 one(1);
|
||||
uint128_pod one_pod = {0, 1};
|
||||
uint128 two(2);
|
||||
uint128_pod two_pod = {0, 2};
|
||||
uint128 three(3);
|
||||
uint128_pod three_pod = {0, 3};
|
||||
uint128 big(1, 0);
|
||||
uint128_pod big_pod = {1, 0};
|
||||
|
||||
EXPECT_EQ(zero, zero_pod);
|
||||
EXPECT_EQ(zero_pod, zero);
|
||||
EXPECT_EQ(zero_pod, zero_pod);
|
||||
EXPECT_EQ(one, one_pod);
|
||||
EXPECT_EQ(one_pod, one);
|
||||
EXPECT_EQ(one_pod, one_pod);
|
||||
EXPECT_EQ(two, two_pod);
|
||||
EXPECT_EQ(two_pod, two);
|
||||
EXPECT_EQ(two_pod, two_pod);
|
||||
|
||||
EXPECT_NE(one, two_pod);
|
||||
EXPECT_NE(one_pod, two);
|
||||
EXPECT_NE(one_pod, two_pod);
|
||||
|
||||
EXPECT_LT(one, two_pod);
|
||||
EXPECT_LT(one_pod, two);
|
||||
EXPECT_LT(one_pod, two_pod);
|
||||
EXPECT_LE(one, one_pod);
|
||||
EXPECT_LE(one_pod, one);
|
||||
EXPECT_LE(one_pod, one_pod);
|
||||
EXPECT_LE(one, two_pod);
|
||||
EXPECT_LE(one_pod, two);
|
||||
EXPECT_LE(one_pod, two_pod);
|
||||
|
||||
EXPECT_GT(two, one_pod);
|
||||
EXPECT_GT(two_pod, one);
|
||||
EXPECT_GT(two_pod, one_pod);
|
||||
EXPECT_GE(two, two_pod);
|
||||
EXPECT_GE(two_pod, two);
|
||||
EXPECT_GE(two_pod, two_pod);
|
||||
EXPECT_GE(two, one_pod);
|
||||
EXPECT_GE(two_pod, one);
|
||||
EXPECT_GE(two_pod, one_pod);
|
||||
|
||||
EXPECT_EQ(three, one | two_pod);
|
||||
EXPECT_EQ(three, one_pod | two);
|
||||
EXPECT_EQ(three, one_pod | two_pod);
|
||||
EXPECT_EQ(one, three & one_pod);
|
||||
EXPECT_EQ(one, three_pod & one);
|
||||
EXPECT_EQ(one, three_pod & one_pod);
|
||||
EXPECT_EQ(two, three ^ one_pod);
|
||||
EXPECT_EQ(two, three_pod ^ one);
|
||||
EXPECT_EQ(two, three_pod ^ one_pod);
|
||||
EXPECT_EQ(two, three & (~one));
|
||||
EXPECT_EQ(three, ~~three);
|
||||
|
||||
EXPECT_EQ(two, two_pod << 0);
|
||||
EXPECT_EQ(two, one_pod << 1);
|
||||
EXPECT_EQ(big, one_pod << 64);
|
||||
EXPECT_EQ(zero, one_pod << 128);
|
||||
EXPECT_EQ(two, two_pod >> 0);
|
||||
EXPECT_EQ(one, two_pod >> 1);
|
||||
EXPECT_EQ(one, big_pod >> 64);
|
||||
|
||||
EXPECT_EQ(one, zero + one_pod);
|
||||
EXPECT_EQ(one, zero_pod + one);
|
||||
EXPECT_EQ(one, zero_pod + one_pod);
|
||||
EXPECT_EQ(one, two - one_pod);
|
||||
EXPECT_EQ(one, two_pod - one);
|
||||
EXPECT_EQ(one, two_pod - one_pod);
|
||||
}
|
||||
|
||||
TEST(Int128, OperatorAssignReturnRef) {
|
||||
uint128 v(1);
|
||||
(v += 4) -= 3;
|
||||
@ -215,24 +293,24 @@ TEST(Int128, Multiply) {
|
||||
}
|
||||
|
||||
// Verified with dc.
|
||||
a = MakeUint128(PROTOBUF_ULONGLONG(0xffffeeeeddddcccc),
|
||||
a = uint128(PROTOBUF_ULONGLONG(0xffffeeeeddddcccc),
|
||||
PROTOBUF_ULONGLONG(0xbbbbaaaa99998888));
|
||||
b = MakeUint128(PROTOBUF_ULONGLONG(0x7777666655554444),
|
||||
b = uint128(PROTOBUF_ULONGLONG(0x7777666655554444),
|
||||
PROTOBUF_ULONGLONG(0x3333222211110000));
|
||||
c = a * b;
|
||||
EXPECT_EQ(MakeUint128(PROTOBUF_ULONGLONG(0x530EDA741C71D4C3),
|
||||
EXPECT_EQ(uint128(PROTOBUF_ULONGLONG(0x530EDA741C71D4C3),
|
||||
PROTOBUF_ULONGLONG(0xBF25975319080000)),
|
||||
c);
|
||||
EXPECT_EQ(0, c - b * a);
|
||||
EXPECT_EQ(a * a - b * b, (a + b) * (a - b));
|
||||
|
||||
// Verified with dc.
|
||||
a = MakeUint128(PROTOBUF_ULONGLONG(0x0123456789abcdef),
|
||||
a = uint128(PROTOBUF_ULONGLONG(0x0123456789abcdef),
|
||||
PROTOBUF_ULONGLONG(0xfedcba9876543210));
|
||||
b = MakeUint128(PROTOBUF_ULONGLONG(0x02468ace13579bdf),
|
||||
b = uint128(PROTOBUF_ULONGLONG(0x02468ace13579bdf),
|
||||
PROTOBUF_ULONGLONG(0xfdb97531eca86420));
|
||||
c = a * b;
|
||||
EXPECT_EQ(MakeUint128(PROTOBUF_ULONGLONG(0x97a87f4f261ba3f2),
|
||||
EXPECT_EQ(uint128(PROTOBUF_ULONGLONG(0x97a87f4f261ba3f2),
|
||||
PROTOBUF_ULONGLONG(0x342d0bbf48948200)),
|
||||
c);
|
||||
EXPECT_EQ(0, c - b * a);
|
||||
@ -240,13 +318,13 @@ TEST(Int128, Multiply) {
|
||||
}
|
||||
|
||||
TEST(Int128, AliasTests) {
|
||||
uint128 x1 = MakeUint128(1, 2);
|
||||
uint128 x2 = MakeUint128(2, 4);
|
||||
uint128 x1(1, 2);
|
||||
uint128 x2(2, 4);
|
||||
x1 += x1;
|
||||
EXPECT_EQ(x2, x1);
|
||||
|
||||
uint128 x3 = MakeUint128(1, static_cast<uint64>(1) << 63);
|
||||
uint128 x4 = MakeUint128(3, 0);
|
||||
uint128 x3(1, static_cast<uint64>(1) << 63);
|
||||
uint128 x4(3, 0);
|
||||
x3 += x3;
|
||||
EXPECT_EQ(x4, x3);
|
||||
}
|
||||
@ -267,12 +345,6 @@ TEST(Int128, ModByZeroCheckFails) {
|
||||
a = 123;
|
||||
EXPECT_DEATH(a % b, "Division or mod by zero:");
|
||||
}
|
||||
|
||||
TEST(Int128, ShiftGreater128) {
|
||||
uint128 a;
|
||||
EXPECT_DEATH(a << 128, "Left-shift greater or equal 128");
|
||||
EXPECT_DEATH(a >> 128, "Right-shift greater or equal 128");
|
||||
}
|
||||
#endif // PROTOBUF_HAS_DEATH_TEST
|
||||
|
||||
TEST(Int128, DivideAndMod) {
|
||||
@ -287,9 +359,9 @@ TEST(Int128, DivideAndMod) {
|
||||
EXPECT_EQ(0, q);
|
||||
EXPECT_EQ(0, r);
|
||||
|
||||
a = MakeUint128(PROTOBUF_ULONGLONG(0x530eda741c71d4c3),
|
||||
a = uint128(PROTOBUF_ULONGLONG(0x530eda741c71d4c3),
|
||||
PROTOBUF_ULONGLONG(0xbf25975319080000));
|
||||
q = MakeUint128(PROTOBUF_ULONGLONG(0x4de2cab081),
|
||||
q = uint128(PROTOBUF_ULONGLONG(0x4de2cab081),
|
||||
PROTOBUF_ULONGLONG(0x14c34ab4676e4bab));
|
||||
b = uint128(0x1110001);
|
||||
r = uint128(0x3eb455);
|
||||
@ -328,7 +400,7 @@ TEST(Int128, DivideAndMod) {
|
||||
|
||||
// Try a large remainder.
|
||||
b = a / 2 + 1;
|
||||
uint128 expected_r = MakeUint128(PROTOBUF_ULONGLONG(0x29876d3a0e38ea61),
|
||||
uint128 expected_r(PROTOBUF_ULONGLONG(0x29876d3a0e38ea61),
|
||||
PROTOBUF_ULONGLONG(0xdf92cba98c83ffff));
|
||||
// Sanity checks.
|
||||
ASSERT_EQ(a / 2 - 1, expected_r);
|
||||
@ -349,8 +421,8 @@ static uint64 RandomUint64() {
|
||||
TEST(Int128, DivideAndModRandomInputs) {
|
||||
const int kNumIters = 1 << 18;
|
||||
for (int i = 0; i < kNumIters; ++i) {
|
||||
const uint128 a = MakeUint128(RandomUint64(), RandomUint64());
|
||||
const uint128 b = MakeUint128(RandomUint64(), RandomUint64());
|
||||
const uint128 a(RandomUint64(), RandomUint64());
|
||||
const uint128 b(RandomUint64(), RandomUint64());
|
||||
if (b == 0) {
|
||||
continue; // Avoid a div-by-zero.
|
||||
}
|
||||
@ -360,22 +432,24 @@ TEST(Int128, DivideAndModRandomInputs) {
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef GOOGLE_PROTOBUF_HAS_CONSTEXPR
|
||||
TEST(Int128, ConstexprTest) {
|
||||
constexpr uint128 zero;
|
||||
constexpr uint128 one = 1;
|
||||
constexpr uint128_pod pod = {2, 3};
|
||||
constexpr uint128 from_pod = pod;
|
||||
constexpr uint128 minus_two = -2;
|
||||
EXPECT_EQ(one, uint128(1));
|
||||
EXPECT_EQ(minus_two, MakeUint128(-1ULL, -2ULL));
|
||||
EXPECT_EQ(from_pod, uint128(2, 3));
|
||||
EXPECT_EQ(minus_two, uint128(-1ULL, -2ULL));
|
||||
}
|
||||
|
||||
#if !defined(__GNUC__) || __GNUC__ > 4
|
||||
// libstdc++ is missing the required type traits pre gcc-5.0.0
|
||||
// https://gcc.gnu.org/onlinedocs/gcc-4.9.4/libstdc++/manual/manual/status.html#:~:text=20.9.4.3
|
||||
TEST(Int128, Traits) {
|
||||
EXPECT_TRUE(std::is_trivially_copy_constructible<uint128>::value);
|
||||
EXPECT_TRUE(std::is_trivially_copy_assignable<uint128>::value);
|
||||
EXPECT_TRUE(std::is_trivially_destructible<uint128>::value);
|
||||
}
|
||||
#endif // !defined(__GNUC__) || __GNUC__ > 4
|
||||
#endif // GOOGLE_PROTOBUF_HAS_CONSTEXPR
|
||||
|
||||
TEST(Int128, OStream) {
|
||||
struct {
|
||||
@ -390,28 +464,28 @@ TEST(Int128, OStream) {
|
||||
{uint128(0), std::ios::oct, 0, '_', "0"},
|
||||
{uint128(0), std::ios::hex, 0, '_', "0"},
|
||||
// crossover between lo_ and hi_
|
||||
{MakeUint128(0, -1), std::ios::dec, 0, '_', "18446744073709551615"},
|
||||
{MakeUint128(0, -1), std::ios::oct, 0, '_', "1777777777777777777777"},
|
||||
{MakeUint128(0, -1), std::ios::hex, 0, '_', "ffffffffffffffff"},
|
||||
{MakeUint128(1, 0), std::ios::dec, 0, '_', "18446744073709551616"},
|
||||
{MakeUint128(1, 0), std::ios::oct, 0, '_', "2000000000000000000000"},
|
||||
{MakeUint128(1, 0), std::ios::hex, 0, '_', "10000000000000000"},
|
||||
{uint128(0, -1), std::ios::dec, 0, '_', "18446744073709551615"},
|
||||
{uint128(0, -1), std::ios::oct, 0, '_', "1777777777777777777777"},
|
||||
{uint128(0, -1), std::ios::hex, 0, '_', "ffffffffffffffff"},
|
||||
{uint128(1, 0), std::ios::dec, 0, '_', "18446744073709551616"},
|
||||
{uint128(1, 0), std::ios::oct, 0, '_', "2000000000000000000000"},
|
||||
{uint128(1, 0), std::ios::hex, 0, '_', "10000000000000000"},
|
||||
// just the top bit
|
||||
{MakeUint128(PROTOBUF_ULONGLONG(0x8000000000000000), 0), std::ios::dec, 0,
|
||||
{uint128(PROTOBUF_ULONGLONG(0x8000000000000000), 0), std::ios::dec, 0,
|
||||
'_', "170141183460469231731687303715884105728"},
|
||||
{MakeUint128(PROTOBUF_ULONGLONG(0x8000000000000000), 0), std::ios::oct, 0,
|
||||
{uint128(PROTOBUF_ULONGLONG(0x8000000000000000), 0), std::ios::oct, 0,
|
||||
'_', "2000000000000000000000000000000000000000000"},
|
||||
{MakeUint128(PROTOBUF_ULONGLONG(0x8000000000000000), 0), std::ios::hex, 0,
|
||||
{uint128(PROTOBUF_ULONGLONG(0x8000000000000000), 0), std::ios::hex, 0,
|
||||
'_', "80000000000000000000000000000000"},
|
||||
// maximum uint128 value
|
||||
{MakeUint128(-1, -1), std::ios::dec, 0, '_',
|
||||
{uint128(-1, -1), std::ios::dec, 0, '_',
|
||||
"340282366920938463463374607431768211455"},
|
||||
{MakeUint128(-1, -1), std::ios::oct, 0, '_',
|
||||
{uint128(-1, -1), std::ios::oct, 0, '_',
|
||||
"3777777777777777777777777777777777777777777"},
|
||||
{MakeUint128(-1, -1), std::ios::hex, 0, '_',
|
||||
{uint128(-1, -1), std::ios::hex, 0, '_',
|
||||
"ffffffffffffffffffffffffffffffff"},
|
||||
// uppercase
|
||||
{MakeUint128(-1, -1), std::ios::hex | std::ios::uppercase, 0, '_',
|
||||
{uint128(-1, -1), std::ios::hex | std::ios::uppercase, 0, '_',
|
||||
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"},
|
||||
// showbase
|
||||
{uint128(1), std::ios::dec | std::ios::showbase, 0, '_', "1"},
|
||||
|
||||
@ -31,7 +31,6 @@
|
||||
#ifndef GOOGLE_PROTOBUF_STUBS_LOGGING_H_
|
||||
#define GOOGLE_PROTOBUF_STUBS_LOGGING_H_
|
||||
|
||||
#include <google/protobuf/stubs/int128.h>
|
||||
#include <google/protobuf/stubs/macros.h>
|
||||
#include <google/protobuf/stubs/port.h>
|
||||
#include <google/protobuf/stubs/status.h>
|
||||
@ -66,6 +65,7 @@ enum LogLevel {
|
||||
#endif
|
||||
};
|
||||
|
||||
class uint128;
|
||||
namespace internal {
|
||||
|
||||
class LogFinisher;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user